Home / 861,348.20-1,188,660.52-479,465.19

Finding the Fourth Proportional to 861,348.20, 1,188,660.52 and 479,465.19

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Solution

The fourth proportional to 861,348.20, 1,188,660.52 and 479,465.19 is: 661,661.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,348.20 : 1,188,660.52 = 479,465.19 : x
  2. Step 2: Convert to fraction form
    861,348.20/1,188,660.52 = 479,465.19/x
  3. Step 3: Cross multiply
    861,348.20x = 1,188,660.52 × 479,465.19
  4. Step 4: Simplify right side
    861,348.20x = 569,921,342,666.63
  5. Step 5: Solve for x
    x = 569,921,342,666.63/861,348.20
  6. Step 6: Final answer
    x = 661,661.97

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Half scale
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Double scale
Find fourth proportional to 861,349.20, 1,188,661.90 and 479,466.19
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.